Jajah

With JAJAH Mobile you can call anyone, anywhere at a fraction of the cost. Your contacts are automatically loaded from your phone and your JAJAH account, so you can simply click to call and save.
JAJAH Mobile uses the Internet (WiFi, 3G, GPRS) to set up the call. Once the call is connected it’s a regular call, meaning excellent, reliable call quality and no big charges for data usage
Free to download, easy to use, cheap to call.
How it works:
1.Download the app and log-in using your JAJAH credentials (you can sign up for a free JAJAH account if you don’t have one).
2. The app will automatically load all your contacts.
3. Click the person you wish to call to, Jajah will connect the call.